The microSHIFT Marvo XE 27 Speed Front Derailleur is a performance upgrade for most cyclists at a fraction of the price of more well-known brands. microSHIFT's "Shift and Go" shifting has become a standard among the cycling industry since its introduction in 1999. If your riding style calls for simple, accurate shifts, microSHIFT will be a good choice. We provide world class quality and top level shifting performance.